I have a Toshiba Portege R500-S5002X, running XP Pro version 2002 SP3, 100 GB HD, 18 GB used, 82 GB free, 1GB of RAM, I use IE 8 & Safari as my broswers, no anti virus software being used. The problem is a while back my flash drives stopped being recognized. Around when this happened I changed some power managmments & am not sure but think I must have done something to cause this to happen. I as always plug in my flash drives(both Lexar & San Disk) & they blink on but XP won't give them a drive letter. Other devices work such as my USB mouse with no issues. I go into 'Computer Managment' into 'Disk Managment' & it is seeing neither my Flash drives or even my hard drive. In 'My computer' the HD is still there though. I go into 'Device Manager' into 'Disk Drives' & the HD as well as the Flash Driives are recognized there. I've gone into USB Root Hub Properties & made sure the 'save power' option is unchecked. I have run AD-Ware & that hasn't helped. I have tried to restore to earlier dates & can't. I even made restore disks from this laptop & tried to run those & I get a screen that says "WRONG MACHINE". I really need a way to run my flash drives on this machine,anyone have any ideas?